Wheel adaptor



FIG. 1 is a top plan view of a wheel adaptor;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a left elevational view thereof,

FIG. 5 is a rear elevational view thereof;

FIG. 6 is a right elevational view thereof; and,

FIG. 7 is an isometric view thereof. 

The ornamental design for a wheel adaptor, as shown and described. 